# coding=utf-8
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
#
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License
import threading


class CommonLogger:
    def __init__(self):
        pass

    common_logger = None
    lock = threading.RLock()


def set_logger(logger):
    with CommonLogger.lock:
        if CommonLogger.common_logger is None:
            CommonLogger.common_logger = logger


def get_logger():
    return CommonLogger.common_logger
